A. + E. Keller Kaltumformtechnik

What A. + E. Keller Kaltumformtechnik does

A. + E. Keller Kaltumformtechnik GmbH & Co. KG is a privately held, family-owned cold forming manufacturer headquartered in Arnsberg, Germany, founded in 1919 and now in its fourth generation of Keller/Guht family ownership (Dr. Stephan Guht and Constantin Guht as managing directors). The company specializes in cold forming (Kaltumformung) of steel, aluminum, and copper components using 5- to 6-stage presses with pressing forces of 130 to 900 tons, producing parts in a wire-diameter range of 6–50 mm and component weights of 0.005–1.2 kg. It pioneered the application of servo technology to multi-stage cold forming presses in 2013.

The Keller Group operates five sites across three continents (Germany, USA, China, Thailand) with approximately 450 employees, generating its primary revenue from the international automotive industry (OEMs and Tier 1 suppliers) for powertrain, vehicle body, battery box, and restraint system applications. Secondary verticals include railway engineering, industrial applications, and electrical engineering. Its product portfolio comprises three vertically integrated lines: cold-formed parts, fully automated further-processed components (CNC machining, welding, bending, ISF finishing, 100% inspection), and fully automated assemblies with EOL testing and DMC traceability, supported by in-house toolmaking and prototype construction.

The business model is direct B2B project-based manufacturing: the company sells to OEMs and Tier 1s through its own sales offices (Keller CFT for USMCA, Beijing and Tianjin Singu Keller for Asia, Siracha for Southeast Asia), supplemented by customized logistics partnerships. Pricing is negotiated per project and not publicly disclosed. The company holds IATF 16949, ISO 9001, ISO 14001, ISO 50001, and TISAX certifications, and has operated carbon-free production using renewable electricity since 2020.

Name

A. + E. Keller Kaltumformtechnik

Legal name

A. + E. Keller GmbH & Co. KG

Website

https://aekeller.com

Company type

Private

Founded year

1919

Operating status

Operating

Headcount range

251–500 employees

Short description

A. + E. Keller Kaltumformtechnik is a fourth-generation German family-owned cold forming manufacturer producing precision steel, aluminum, and copper components for international automotive OEMs and Tier 1 suppliers across five sites on three continents.

Ownership category

akta.pro rank

Product category

Cold Formed Metal Components

NAICS

Fabricated Metal Product Manufacturing (332)

SIC

Metal Forgings & Stampings (3460)

akta.pro primary industry

Metal Forming & Fabrication Machines (Presses, Bending, Shearing, Stamping) (IMAHADAC)

akta.pro secondary industry

Metal Cutting Tools, Tooling & Workholding (Cutters, Inserts, Chucks, Fixtures) (IMAHADAB)

Keywords

• Cold forming technology
• Automotive metal components
• Precision metal parts
• Cold heading fasteners
• Metal stamping services

Headquarters

HQ city

Arnsberg

HQ country

Germany

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Cold-formed metal components manufacturing: Design, development, and mass production of cold-formed parts from steel, aluminum, and copper. Components are produced using 5-6 stage presses with 130-900 tons pressing force, with wire diameters of 6-50mm and component weights of 0.005-1.2kg.
2. Further processing and machining services: Additional value-added services including bending, coining, punching, trimming, stamping, radial riveting, setting, testing, resistance and laser welding, fine washing, vibratory grinding, isotropic superfinishing, and CNC machining (turning, milling, reaming, grinding, thread forming, thread cutting).
3. Assembly services: Fully automated assembly of components, resistance welding, 100% EOL testing, and assembly combining components from different manufacturing processes. Includes DMC marking for traceability.
4. Tool manufacturing and prototyping: In-house tool development, toolmaking, and prototype construction services.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

A. + E. Keller Kaltumformtechnik manufactures precision cold-formed metal components in steel, aluminum, and copper using multi-stage cold forming presses for the automotive industry and adjacent sectors. The company's offering spans the full value chain from in-house tool design and toolmaking through forming, further processing (machining, heat treatment, surface finishing), and the assembly of pre-assembled component groups.

Product overview

A. + E. Keller is a cold forming manufacturer offering a vertically integrated portfolio centered on three core product lines: Formed Parts (cold formed components from steel, aluminum, and copper), Further Processed Components (automated machining and finishing of blanks), and Assemblies (combined components with welding and testing). These products are supported by six internal competencies: Development, Cold Forming, Further Processing, Machining, Toolmaking, and Logistics. The company operates 15 cold forming machines (5–6 stage presses with 130–900 t pressing force) across 19,000 m² of production space at its Arnsberg headquarters, serving the international automotive industry with applications in powertrain, vehicle body, battery box, and restraint systems.

Differentiator

Problem solved

Functional benefit

Brands

• Keller CFT: Keller Cold Forming Technologies - sales and distribution entity for the North American market (USMCA region)
• Singu Keller

Products and services

• Formed Parts (Umformteile)

Quantifiable outcome

• Carbon-free production since 2020
• +1 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Xingtai Iron & Steel Corp. Ltd.coreStrategic or Co-development Partner · 1 January 2004Joint venture partner for the establishment of Singu Keller CFP (Cold Forming Parts) in Beijing, China in 2004. Xingtai Iron & Steel Corp. is a Chinese steel company that partnered with A. + E. Keller to create a cold forming manufacturing presence in the Asian market.

Scale indicators9 records

Recent moves13 records

Expansion highlights5 records

Broad incumbents

• Schaeffler: Large German automotive and industrial supplier with extensive cold forming and precision forming capabilities across multiple divisions. Comparable to Keller on process and customer base, but operates at much larger scale and broader scope.

Direct peers

• Wilhelm Böllhoff: German family-owned fastening and joining technology specialist with cold forming capabilities. Comparable to Keller as a German Mittelstand supplier with overlapping automotive fastener/component products.
• Hirschvogel: German automotive forging specialist with cold and warm forming capabilities. Comparable to Keller on metal forming process, automotive customer base, and family-owned German Mittelstand positioning.
• Nedschroef: Dutch cold-formed fastener manufacturer serving automotive and industrial customers. Comparable to Keller in process technology (cold forming), product range, and Tier 1/OEM customer profile.
• Muhr und Bender (MUBEA): German automotive supplier specializing in cold forming, hot forming, and chassis components. Highly comparable to Keller on process technology, automotive focus, and German Mittelstand character.
• Peiner Umformtechnik: German cold forming specialist serving automotive and industrial markets. Comparable to Keller on core process technology and customer profile.
• Arnold Umformtechnik: German specialist in cold forming and metal forming components serving the automotive and industrial sectors. Directly comparable to Keller as a Mittelstand cold former with overlapping product lines and customer base.
• Bulten: Swedish-listed supplier of fasteners and cold-formed components to the automotive industry. Closely comparable to Keller on process (cold forming), customer segment (OEMs/Tier 1s), and product portfolio.
• Profil Verbindungstechnik (PVT): German cold-formed and machined component manufacturer focused on automotive applications. Closely comparable to Keller in core process, product mix, and Tier 1/OEM customer base.
• KAMAX: German manufacturer of high-strength cold-formed fasteners and precision components for the automotive industry. Direct peer to Keller on cold forming technology and OEM/Tier 1 customer overlap.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/aekeller_arnsberg
• LinkedInlinkedin.com/company/a-e-keller

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about A. + E. Keller Kaltumformtechnik